Polychlorinated biphenyls (PCBs) are persistent organic pollutants that are widely distributed in the environment. It is noteworthy that the PCBs are endocrine-disrupting substances, and their toxicity induces cancer and damage to the mammalian reproductive system, immune system, stomach, skin, liver, etc. This work aimed to synthesize 3A-amino-3A-deoxy-(2AS, 3AS)-β-cyclodextrin hydrate/tin disulfide composite material and to study its material properties, electrochemical properties, and application to PCB detection. The nanostructured tin disulfide (SnS2) synthesized by hydrothermal technique and 3A-amino-3A-deoxy-(2AS, 3AS)-β-cyclodextrin hydrate were sequentially modified onto the disposable screen-printed carbon electrode (SPCE) via titration using a micropipette. The 3A-amino-3A-deoxy-(2AS, 3AS)-β-cyclodextrin hydrate (β-CD) improved the selectivity of the modified electrode. The fabricated β-CD/SnS2/SPCE was employed to determine the presence of PCBs by cyclic voltammetry (CV) and differential pulse voltammetry (DPV). The detection range was 0.625-80 μM, with a limit detection of approximately 5 μM. The electrodes were as stable as 88% after 7 days' storage. The results showed that the β-CD successfully encapsulated PCBs to achieve an electrochemical sensor that reduced the time and increased the convenience of PCBs detection.

中文翻译：

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3A-氨基-3A-脱氧-（2AS，3AS）-β-环糊精水合物/锡二硫化锡修饰的丝网印刷碳电极，用于电化学检测多氯联苯。

多氯联苯（PCB）是持久性有机污染物，广泛分布于环境中。值得注意的是，多氯联苯是破坏内分泌的物质，其毒性会诱发癌症并损害哺乳动物的生殖系统，免疫系统，胃，皮肤，肝脏等。这项工作旨在合成3A-氨基-3A-脱氧-（ 2AS，3AS）-β-环糊精水合/二硫化锡复合材料，并研究其材料性能，电化学性能及其在PCB检测中的应用。通过水热技术合成的纳米结构二硫化锡（SnS2）和3A-氨基-3A-脱氧-（2AS，3AS）-β-环糊精水合物通过微量移液器滴定依次修饰到一次性丝网印刷碳电极（SPCE）上。3A-氨基-3A-脱氧-（2AS，3AS）-β-环糊精水合物（β-CD）改善了修饰电极的选择性。通过循环伏安法（CV）和微分脉冲伏安法（DPV），使用制造的β-CD/ SnS2 / SPCE确定PCB的存在。检测范围为0.625-80μM，极限检测为约5μM。储存7天后，电极稳定至88％。结果表明，β-CD成功地封装了PCB，实现了电化学传感器，从而减少了时间并增加了PCB检测的便利性。储存7天后，电极稳定至88％。结果表明，β-CD成功地封装了PCB，实现了电化学传感器，从而减少了时间并增加了PCB检测的便利性。储存7天后，电极稳定至88％。结果表明，β-CD成功地封装了PCB，实现了电化学传感器，从而减少了时间并增加了PCB检测的便利性。